58 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 12$ 



Genus SALASSIA Folin 

 1870. Salassia Folin, Ann. Soc. Linn. Maine-et-Loire, vol. 12, p. 200. 



Shell pupiform, whorls not inflated, marked by axial ribs which 

 extend from the tabulated summit of the whorl to the umbilical area. 

 Varices absent. 



Type : Salassia tropidita Dall and Bartsch. 



SALASSIA (SALASSIA) FARGOI, new species 

 Plate 15, figure i 



Shell minute, pupiform, cream-yellow. The nucleus consists of 

 about 1.5 small whorls whose axis is at right angles to the axis of the 

 postnuclear whorls, in the first of which it is obliquely half immersed. 

 The postnuclear whorls are moderately well rounded with almost 

 flattened, broad, shouldered summit and marked by very strong, 

 slightly protractively slanting, very distantly spaced axial ribs. These 

 ribs are very feeble on the first whorl while the rest bear eight each. 

 The suture appears contracted, rendered so by the shoulder. Periph- 

 ery and base well rounded and crossed by the strong axial ribs, which 

 extend to the umbilical region. Aperture obliquely oval ; columella 

 slender, provided with a fold; parietal wall strong, rendering the 

 aperture complete ; outer lip curved and slightly thickened. 



The type, U.S.N.M. No. 561664, comes from the Pliocene of North 

 St. Petersburg, Fla. It has 4.6 postnuclear whorls and measures: 

 Length 1.8 mm., diameter 0.8 mm, U,S,N,M, No, 561665 contains 

 another specimen from the same source, while two more are in the 

 collection of the A.N,S.P. 



Subgenus Salassiella Dall and Bartsch 

 1909. Salassiella Dall and Bartsch, U. S, Nat. Mus. Bull. 68, p. 133. 



Shell pupiform, whorls inflated, marked by axial ribs which extend 

 undiminished from the summit to the umbilical area. Varices strong, 

 irregularly distributed. 



Type: Odostomia (Salassiella) laxa Dall and Bartsch. 



SALASSIA (SALASSIELLA) BALCHI, new species 



Plate IS, figure 5 



Shell minute, elongate-pupoid, pale buff. The nucleus consists of 

 about 2 small turns whose axis is at right angles to that of the post- 

 nuclear spire, in the first whorl of which the nucleus is half immersed. 



